DE102008063100A1 - Food heat treatment device, has inner chamber connected with exhaust air channel, and floor drain coupled with regeneration device for conditioning water to drinking water quality and supplying water to supply device - Google Patents

Abstract

The device has an inner chamber (12) connected with an exhaust air channel (30), and a supply device (20) for supplying water into the inner chamber. A floor drain (40) is coupled with a regeneration device (60) for conditioning water to drinking water quality and supplying the water to the supply device. The exhaust air channel is coupled with the floor drain over a bypass line (38). A collecting container (48) is set between the floor drain and an inlet (62) of the regeneration device. A drinking water collecting container (76) is fixed between an outlet (65) and the supply device.

Description

The The invention relates to a device for heat treatment of food, with a heated interior, with a Exhaust duct is connectable, with a floor drain and with a Feeding device for supplying fluid in the interior.

Such a device is known from DE 296 06 655 U1 known.

Of the known oven has a heated oven space, a fan to the circulation of the furnace atmosphere and a in the Furnace chamber protruding Beschwadungsrohr with at least one Beschwadungsdüse for spraying fluid in the oven room. The sprayed Fluid evaporates in the heated furnace atmosphere, this Process favors the heat treatment. The steaming pipe is connectable via a valve with a water connection. Heating elements are provided for heating the oven space. On the ground the furnace chamber is provided a floor drain, the outlet line via a Valve is lockable. The floor drain is for removal of residues from the heat treatment or cleaning the oven compartment.

Farther the device has a cleaning device for cleaning the Oven with a detergent on. The cleaning device has a spray nozzle for spraying the cleaning agent in the furnace chamber, which can be coupled to a spray pipe, wherein the spray tube optionally formed as Beschwadungsrohr can be.

Of the Oven has an advantageous combination of steam generating means and cleaning device, wherein the same elements for feeding of the fluid to be used in the interior.

Such Need devices for heat treatment of food for procedural reasons, water in drinking water quality. To the Cleaning the devices will add even more amounts of water needed. Furthermore, in the heat treatment a portion of the aquatic food content of the foods. consequently the device must be supplied with drinking water quality water while the service water is being discharged from the apparatus got to. This leads to a known device in a increased effort for water supply and -disposal.

Of Furthermore, in the known device an increased Effort to be operated to a suitable water hardness of drinking water, to prevent functional impairment Deposits on parts of the device to secure. For adaptation to different water hardness, for example, conditionally through various locations, water filter systems are used. Again, additional installation and service work is inevitable.

Should such devices are placed in places that do not provide water and disposal, so must integrated water tank or additional water tanks are used. This leads to further increased effort by the Changing the empty and full containers and the required monitoring level and water quality.

From the DE 44 03 386 C1 a further device for heat treatment of food is known, comprising a treatment room, with a steam generating device whose steam line for heating the treatment room with this is connectable, with a fan for circulation of the fluid within the treatment room and with a bottom outlet, which is connected to a drain line ,

at the heat treatment in an exclusively with Steam heated treatment room is constantly needed steam. Consequently, there is an even greater need for water in drinking water quality, that of the feeder is supplied. Accordingly larger Discharge amounts of service water. The effort for the water supply and disposal is considerable.

To the Cleaning the stove will be even more amounts of water here needed in drinking water quality. Likewise rises the amount of service water that must be disposed of. For The water supply and disposal must be a high effort become.

Of the Invention is therefore the object of a device for Heat treatment of food with easy handling as well as installation and service-friendly construction. Furthermore, the device should be as independent as possible operated by water supply and water disposal facilities can be.

These Task is in a device according to the above mentioned type solved according to the invention, that the floor drain with a regeneration device for treatment of water in drinking water quality can be coupled, which is the Feeding device can be fed.

The The object of the invention is completely solved in this way.

According to the invention, namely, the process water from the heat treatment or Rei nigungsprozess supplied by the bottom drain of the regeneration device, where it is treated in drinking water quality, and is then as drinking water back to the feeder available. It creates a cycle that ensures water supply and sanitation essentially without external intervention. In this way, the handling of the device is simplified. The cycle significantly reduces the drinking water supply requirement and the domestic water disposal requirement. Water resources are spared. The device can be operated independently of drinking water supply and service water disposal facilities. In this way, the installation effort and in particular the effort during operation is significantly reduced because no water refilled or very rarely water must be refilled.

in the As used in this application, the term "delivery device" means any Device to understand the supply of fluid in the interior of the device is used. These may be facilities acting in conjunction with the interior of the device for Contribute steam generation. This can z. B. a steam boiler be with integrated heating device or also a Beschwadungsdüse, which injects a fluid in the heated interior. It is also conceivable that the feeding device of Supply of cleaning fluid into the interior in the frame a method for cleaning the device is used.

In Advantageous development of the invention is the exhaust duct with coupled to the floor drain via a bypass line.

On This way can also vapor and moist air coming out exit the interior in the exhaust duct, as a condensate of the regeneration device be supplied. This allows the regeneration cycle be extended to the exhaust duct. The external drinking water requirement sinks further.

According to one Another embodiment of the invention, the device has a Collecting container between an input of the regeneration device and the floor drain.

On This way, a service water buffer is created, which ensures operational safety of the regeneration cycle increased. This is a service-friendly Construction guaranteed.

According to one Another embodiment of the invention, the device has a Withdrawal point at the collection container for the removal of process water on.

On this way can excess hot water, for example, caused by water release of the heat-treated Food, to be removed from the regeneration cycle. So must not all service water of the regeneration device but only the part that is actually fed is needed as drinking water. Furthermore, by the Withdrawal point the removal of service water when interrupted Regeneration cycle, for example after switching off the Device at closing time, guaranteed. This is simplified Handling and increases service friendliness.

In Advantageous development of the invention, the device a level monitoring for the sump on.

Consequently can be ensured that the collection container only filled to its maximum capacity will and will not overflow into the interior when the tank is full he follows. In this way, the reliability is increased.

According to one Another embodiment of the invention is at least one filter between the floor drain and the entrance of the regeneration device provided.

Of the Filter can be designed as a coarse filter or fine filter. On This way, particles are already in front of the regeneration device filtered out of the regeneration cycle. This serves the increase the operational safety of the regeneration cycle. Thus designed the structure of the device even more service friendly.

According to one Another embodiment of the invention, the regeneration device via a first exit with a container for receiving Residues can be coupled.

On This way, a buffer is created that removes the residues from the regeneration process to make it environmentally sound Dispose of waste. The container can be emptied periodically become. This increases the independence of the device from external installations.

In Advantageous development of the invention is the container designed exchangeable.

On this way the container can with residues are removed from the regeneration device of the device. For example, he may in operation against an empty container be replaced. This increases the operational safety the device and serves a service-friendly construction.

In Advantageous development of the invention, the container a level monitoring on.

So can be ensured that the container only up to its maximum capacity is filled and that there is no overflow when the container is full. In this way, the handling of the device simplified even further, service friendliness continues to improve.

According to one Another embodiment of the invention, the device has a Drinking water collection tank between a second exit the regeneration device and the supply device on.

On This way, a drinking water buffer is created, which ensures operational safety the regeneration cycle increases and the drinking water supply the supply device safeguards. This simplifies the Handling the device and increases service friendliness further.

about the drinking water collection tank can be an initial filling the device done with suitable drinking water. Preferably is the externally treated drinking water used in terms of its water hardness to use in the device customized.

In Advantageous development of the invention is a check valve between the second output of the regeneration device and the Provided drinking water collection tank.

On this way is the running back of the regenerated drinking water from the drinking water collection tank in the regeneration device prevented. Thus, the drinking water collection area is separated from the water treatment and regeneration area safely separated.

According to one Another embodiment of the invention is a water outlet provided at the drinking water collection tank for the removal of drinking water.

Consequently can excess drinking water, for example due to released water content of the heat-treated Food, the regeneration cycle are removed. The removed Water has drinking water quality and can be used arbitrarily be, for example, as an initial filling for a further device according to the invention kind. In this way, drinking water resources are spared.

In Advantageous development of the invention, the drinking water collection container a level monitoring on.

On This way it can be ensured that the drinking water collection tank only filled to its maximum capacity and no overflow is made with a full drinking water collection tank. Thus, the handling of the device further simplified.

According to one Another embodiment of the invention is the drinking water collection tank designed as a pressure vessel.

On This way, the drinking water collection container is flameproof and can store an overpressure from a pump is generated in the regeneration cycle. Thus, the drinking water collection tank serve as energy storage and, if necessary, drinking water under pressure submit.

In Advantageous development of the invention, the device a control valve between the drinking water collection tank and the feeding device.

On This way, the stored drinking water from the drinking water collection tank, the designed as a pressure vessel, under pressure, controlled by the control valve, the feeder be supplied. Thus, no additional Pump between the potable water tank and the Zuführungseinrich device necessary. This is a cost-effective, simple construction given the device.

It it is understood that the above and the following to be explained features of the invention not only in the specified combination, but also in other combinations or used alone, without the scope of the present To leave invention.

Further Features and advantages of the invention will become apparent from the following Description of a preferred embodiment below Reference to the drawings. Show it:

1 a schematic representation of a first embodiment of a device according to the invention for the heat treatment of food in a greatly simplified form and

2 a schematic representation of a second embodiment of a device according to the invention for the heat treatment of food in a greatly simplified form.

In 1 is a device according to the invention in total with the numeral 10 designated.

The illustration is purely schematic, with the presentation of a thermal insulation, automatic control and further Regeleinrich was omitted for reasons of clarity.

The device 10 has a housing 24 inside, inside which an interior 12 , For example, a baking or cooking space is provided. At the back of the interior 12 is a fan 16 provided, drivable with a motor 18 that with a heater 14 can be coupled. By means of the blower 16 can the atmosphere in the interior 12 circulated and by the heating 14 heated atmosphere to be distributed.

alternative or additionally, a heated steam boiler may be provided be (not shown), provided the device as a combi steamer is executed.

The housing 24 has a door 22 on, through which the food enters the interior 12 can be introduced for heat treatment.

In the upper area of the interior 12 an opening is provided to which an exhaust duct 30 with a valve 32 followed. Along the exhaust air duct 30 is a capacitor 34 for condensation of steam and humid air in the exhaust duct 30 intended. An exhaust valve 33 to escape excess water vapor and humid air is also provided.

The interior 12 has in its lower part a floor drain 40 on. The floor drain 40 is preferably formed as a vertical or inclined channel, in the side of a bypass line 38 opens into the exhaust duct 30 opens and optionally via a valve (not shown) can be closed. In the floor drain 40 is a coarse filter 42 interposed.

The floor drain 40 into which the bypass line 38 opens, flows into a collection container 48 , The collection container 48 indicates a level monitoring 50 and a sampling point 52 that have a valve 51 can be controlled. The collection container 48 flows into a fine filter 56 , The fine filter 56 is with an entrance 62 a regeneration device 60 connected. Between the fine filter 56 and the entrance 62 is a pump 58 provided for conveying the service water.

A first exit 64 the regeneration device 60 is with a container 66 connected to the intake of residues. The container 66 indicates a level monitoring 68 on.

A second output of the regeneration device 60 is via a check valve 74 with a drinking water collection tank 76 connected. The check valve 74 may for example be designed as a spring-loaded check valve.

The drinking water collection tank 76 indicates a level monitoring 78 and one with a valve 82 controllable water intake point 84 on. The drinking water collection tank 76 is about a pump 80 with a feeder 20 connectable. These are z. Example, to a Beschwadungsdüse through which water is sprayed into the interior, which evaporates and the humidification is used in a heat treatment process.

During the heat treatment process of food, water is released. Also, water may result from a cleaning process that cleans the interior from time to time. The process water is over the floor drain 40 from the interior 12 flow away. The coarse filter 42 can filter out coarse impurities from the accumulated service water and relieve the downstream filter devices.

From the interior 12 Escaping steam or escaping moist air is released via the exhaust air duct 30 dissipated. To reduce the steam output to the outside, the exhaust air is through the condenser 34 guided. The resulting condensate is via the bypass line 38 the collection container 48 fed. Uncondensed portions of the water vapor and humid air can pass through the exhaust valve 33 that with the exhaust duct 30 is connected, escape to the outside.

The collection container 48 serves the Brauchwasserpufferung for the regeneration cycle, but at the same time also part of other facilities, such. As cleaning and Fettabscheidseinrichtungen be. The collection container 48 has level monitoring 50 , which signals the exceeding of a maximum level. About the sampling point 52 can process water from the sump 48 be removed. This will be over the valve 51 controlled. The valve 51 can z. B. be designed as a ball valve, but also as a solenoid valve, for example coupled with the level monitoring 50 , If too much water is supplied to the regeneration cycle during the heat treatment via the water delivery of the heat-treated food, then excess hot water can pass through the extraction point 52 be withdrawn from the circulation.

The process water from the collection container 48 goes through another filter stage, the fine filter 56 , By means of the pump 58 the prefiltered service water becomes the entrance 62 the regeneration device 60 fed. In the subsequent regeneration process, process-dependent impurities are removed from the process water until it is available again in drinking water quality. The regeneration process has a suitable water treatment, for example, physical, phy physical-mechanical, chemical, biological processes or their suitable combination. It can be z. B. be an ultrafiltration. Furthermore, during the regeneration process, the hardness of the water is suitably influenced to ensure consistent results of the heat treatment and to avoid calcification and the like on parts of the device. Additional internal or external devices for influencing the water hardness can thus be dispensed with.

The residue, also referred to as eluate, is passed over the first exit 64 from the regeneration device 60 excreted and in the container 66 collected. The level monitoring 68 signals the achievement of a certain fill level. The container 66 is removable from the device. For example, so the container 66 could be changed during operation of the device, furthermore, the filled container could 66 be disposed of with the residues in an environmentally sound manner.

At the second exit 65 the regeneration device 60 is now available water in drinking water quality. About the check valve 74 the drinking water is added to the drinking water collection tank 76 directed. The drinking water collection tank 76 is with level monitoring 78 coupled. The level monitoring 78 signals reaching a maximum fill level. About the water intake 84 controlled by the valve 82 , now water can be taken in drinking water quality. Preferably, the drinking water collection container is filled once before commissioning the device once with drinking water in order to provide the necessary for the heat treatment process amount of drinking water from the beginning.

The drinking water is now using the pump 80 the feeding device 20 supplied and if necessary via these as fluid in the interior 12 sprayed.

In 2 an alternative embodiment of a device according to the invention is shown and in total with the numeral 10a designated.

The drinking water collection tank 76a is designed as a pressure vessel. A pressure monitoring unit 94 can now be used to the level in the drinking water collection tank 76a to monitor. Dominates in designed as a pressure vessel drinking water collection tank 76a Overpressure, the drinking water can automatically due to the pressure differences, controlled by a control valve 92 , the feeder 20 accrue. Thus, on a pump between the drinking water collection tank 76a and the feeder 20 be waived.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 29606655 U1 [0002]
• - DE 4403386 C1 [0009]

Claims (15)

Apparatus for heat treatment of foodstuffs, having a heated interior ( 12 ), which with an exhaust duct ( 30 ) is connectable, with a floor drain ( 40 ) and with a feed device ( 20 ) for supplying fluid into the interior ( 12 ), characterized in that the floor drain ( 40 ) with a regeneration device ( 60 ) can be coupled for the treatment of water in drinking water quality, the feed device ( 20 ) can be fed. Apparatus according to claim 1, characterized in that the exhaust duct ( 30 ) with the floor drain ( 40 ) via a bypass line ( 38 ) is coupled. Apparatus according to claim 1 or 2, characterized by a collecting container ( 48 ) between the floor drain ( 40 ) and an entrance ( 62 ) of the regeneration device ( 60 ). Apparatus according to claim 3, characterized by a removal point ( 52 ) at the collecting container ( 48 ) for the removal of service water. Apparatus according to claim 3 or 4, characterized in that the collecting container ( 48 ) a fill level monitoring ( 50 ) having. Device according to one of the preceding claims, characterized in that at least one filter ( 42 . 56 ) between the floor drain ( 40 ) and the entrance ( 62 ) of the regeneration device ( 60 ) is provided. Device according to one of the preceding claims, characterized in that the regeneration device ( 60 ) via a first output ( 64 ) with a container ( 66 ) is coupled to absorb residues. Apparatus according to claim 7, characterized in that the container ( 66 ) is formed replaceable. Apparatus according to claim 7 or 8, characterized in that the container ( 66 ) a fill level monitoring ( 68 ) having. Device according to one of the preceding claims, characterized by a drinking water collecting container ( 76 ) between a second output ( 65 ) of the regeneration device ( 60 ) and the feeding device ( 20 ). Apparatus according to claim 10, characterized by a check valve ( 74 ) between the second exit ( 65 ) of the regeneration device ( 60 ) and the drinking water collection container ( 76 ). Apparatus according to claim 10 or 11, characterized by a water tapping point ( 84 ) at the drinking water collection container ( 76 ) for the abstraction of drinking water. Device according to one of claims 10 to 12, characterized in that the drinking water collection container ( 76 ) a fill level monitoring ( 78 ) having. Device according to one of claims 10 to 13, characterized in that the drinking water collecting container ( 76 ) is designed as a pressure vessel. Apparatus according to claim 14, characterized in that a control valve ( 92 ) between the drinking water collection container ( 76 ) and the feeding device ( 20 ) is arranged.